Customer Reviews Hydro Flask 21 oz Standard Mouth with Standard Flex Cap

It keeps water cold for a day and hot water hot for half a day

Received this as a Christmas present in the color Hibiscus and I am loving it! I've always dreamed of having a Hydroflask and once I got one, I can say it works wonders. It keeps my water cold all day (with the little help of ice) and I take it everywhere with me! I have also dropped it on concrete but there are minimal paint chips and no dents.

I used to use a glass water bottle that had a protective outer rubber around it. After breaking two I got a hydro flask and loved it so much I got one as a christmas present for a friend.

Bought this for one of my sons for Christmas. He loves it. Great design & cool colour. Thank you

This water bottle is the best I've ever had. Water stays cold for a long time.

I bought this 5 years ago and it still in great shape.

I use this probably everyday. It keeps liquids cold for a pretty long time.

I've had this bottle for almost a year and it still works perfect definitely worth the price

My daughter absolutely LOVES this beautiful Watermelon color Hydro Flask bottle that I gave as part of her birthday gift! Suits her needs perfectly. Just the right size for work and fits perfectly in her car car cup holder!

Bought these (2) to replace "plastic" bottles in which the water always tasted like plastic. Stainless interior of the Hydro Flask give a much clean taste.

This Hydro Flask keeps my water ice cold and my ice cubes don't melt! I love my Hydro Flask!

I'm really pleased with this purchase, I love the way it feels and I like that it can actually keep my water cold.

Love this! Keeps the ice in my drink all day! I loved it so much I ordered another larger one and am about to give a couple as gifts!

I love it! It keeps my drinks cold all day long. Especially love the color.

I have every brand that's decent, and this is by far the best. Nice in the hand, a well made lid that seals well and does not leak. I have not tried using it for hot liquids. It went on a 2 week jaunt in my pop up camper, in the carrying case - it was always at hand.

Keeps drinks cold all day and actually will keep them overnight without the ice melting,great product!

i bought this expecting it to be like any ordinary water bottle but i'm so impressed. will for sure buy again.

Got my daughter one she loveddd it so glad I got it for her

I bought this about a year ago and I put everything in it. So useful for so many things

I was given this as a Christmas present and I love it soooo much! I was given "frost" in the 21Ounce and it is the perfect size for my needs. I love how this actually works and keeps water/ice Ssooooo cool! I actually had to tip out the tea that I once put in one because it just wasnt cooling down enough to drink! The only thing I dont like is that they dent and the paint chips super easily, so you have to be super careful!

Very nice bottle. It looks and feels like a quality piece.

I bought this a few weeks ago and it was the best decision I ever made in terms of drinking water. I love how cold my water stays- even after HOURS of being left in direct sunlight it's still cold!! Not only that but I find myself drinking more water now because it's more enjoyable so cold out of the hydro flask! I would recommend this to anyone.

I bought this bottle almost a year ago and it's worked well! I can put ice in it before I leave in the morning and there is still some left when I come home 6 hours later! It also works well with hot chocolate and keeps it nice and warm! The only downside I've found is it's very easy to mark it up. (Small streaks of paint from my walls, scratches, one small dent) Overall, it's a very good water bottle that can hold its temperature!

I bought this for my niece and she loves it. Pink is her favorite color.

i got mine a while back and fell in love with it. i have dropped mine several times and it has no dint!!!!!!!! I will definently consider this product!!!!!